Deteciton of Acetylene Gas based on high Performance $\text{WO}_{3}$ Nanolamellae/Reduced Graphene Oxide (rGO) Nanosheets

Abstract

Oil-immersed transformer faults diagnosis based on Metal oxides (MOs) materials is one of the most promising research trends in power system. In this paper, four contents of WO3 nanolamellae/ reduced graphene oxide nanocomposites were compounded via controlled hydrothermal method. X-ray diffraction (XRD) and transmission electron microscopy (TEM) were used to investigate the microstructure of prepared nanocomposites and indicated WO3 were widely distributed among rGO sheets. Spin -coating technique was utilized for nanocomposites coverage on gas sensor and the sensitivity of WO3 nanolamellae/ reduced graphene oxide nanocomposites towards multi-concentrations of C2H2 gases with temperature ranging from $50\ ^{\circ}\mathrm{C}$ to $400\ ^{\circ}C$ was studied. The research results exhibited that 1 wt% sensing materials demonstrated a lower working temperature, outstanding response and recovery time, excellent long-time stability and remarkable recoverability. The potential mechanism of high performance WO3/rGO materials could be explained based on heterojunction electron exchange theory. Research outcomes presented in this paper can be the guidance to power transformer faults diagnosis to some degree.